Number of washes before the collar become loose, colour faded, become baju tidur:

Uniqlo graphic tee: 10 washes, really poor quality usually
Uniqlo airism tee: 100 kali wash still like new
Cotton On tee: 1 wash sudah basik
Padini tee: 100 wash still ok, some industrial magic going on here
Adidas store tee: 10 washes and the fabric looks loose
Nike store tee: 10 washes and the fabric will also look tired already
Superdry tee: 50 washes? Their quality is good and collars don't usually have any problem but some colours like red get faded very easily. Mine from 2018 I don't use anymore because either fabric shrink or I get fat.
Brands/FOS graphic tee: Poor quality, maybe 10 washes
H&M tee: Hit or miss, depends on the material. Their sweater and hoodie from 2015 still look new.
G200 shirt: Bought in 2019, white one become a bit yellow, otherwise all still ok
Padini shirt: Im still using some from 2010 a decade ago, color faded a bit
Uniqlo shirt: Most from 2015 have already died due to color faded so I guess 5 years
Muji shirt/tee: Indestructible. From 2012 still looks good.